body{
    background-color: rgb(136, 136, 136);
}
div{
    overflow-y: hidden;
}
.cl{
    clear: both;
}
.wrapper{
    width: 1000px;
    margin: 0 auto;/*居中*/
    background-color: #fff222;
}
.header{
    width: 990px;
    background-color: #916bfa;
    margin: 0 auto;
    min-height: 200px;
}
.main{
    width: 990px;
    background-color: #fff;
    margin: 0 auto;
}
.footer{
    width: 990px;
    background-color: #3eb899;
    margin: 0 auto;
    min-height: 100px;
}
.sidebar{
    width: 189px;
    float: left;
    min-height: 600px;
    background-color: #ff77bb;
    padding-left: 10px;
    border-right: 1px dashed #fff222;
}
.content{
    float: left;
    width: 785px;
    min-height: 600px;
    background-color: #248b6c;
    margin-left: 5px;
}

